Marine anchor



FIG. 1 is a rear elevation view of a marine anchor;

FIG. 2 is a side elevation view thereof, the opposite side being amirror image of that shown;

FIG. 3 is a front elevation view thereof;

FIG. 4 is an enlarged top plan view thereof;

FIG. 5 is an enlarged bottom plan view thereof;

FIG. 6 is a front perspective view thereof; and,

FIG. 7 is a rear perspective view thereof.

The ornamental design for a marine anchor, as shown and described.